Aosif which is one of the largest diesel generator set manufacturers in China mainland. We are specialized in making 5kva to 3000kva diesel generator sets under the brands of cummmins, perkins, doosan and other engines to equip with stamford,leroy somer a

Ball screw is made of screw, nut and ball. it's function is to turn the rotary motion into liner motion, which is a further extension and development of ball screw. the significance of this development is to move into a rolling bearing from slidingac...